Highest Composite Rated Episodes
Supergirl realizes that in order to stop Lex and Leviathan she must work with the one person she never thought she'd trust ...read more Supergirl realizes that in order to stop Lex and Leviathan she must work with the one person she never thought she'd trust again - Lena. Nia keeps dreaming about Brainy (Jesse Rath) but struggles with what the dreams are trying to tell her. Meanwhile, Brainy realizes there is only one way to stop Lex. show less
Kara's investigation into William Dey's "criminal" activities results in the shocking revelation he is not who ...read more Kara's investigation into William Dey's "criminal" activities results in the shocking revelation he is not who she thinks. Meanwhile, the conflict between Malefic and J'onn J'onzz reaches a boiling point. show less
When Myr’nn (guest star Carl Lumbly) inadvertently causes psychic disturbances at the DEO, Supergirl must work with J’onn to ...read more When Myr’nn (guest star Carl Lumbly) inadvertently causes psychic disturbances at the DEO, Supergirl must work with J’onn to contain the resulting chaos. Meanwhile, Mon-El begins training Kara in fighting techniques he’s learned in the future for battling Worldkillers. show less
Mxyzptlk returns with a proposition for Kara – what if she could go back in time and tell Lena her secret before Lex did, ...read more Mxyzptlk returns with a proposition for Kara – what if she could go back in time and tell Lena her secret before Lex did, would things turn out different? Looking back over key moments throughout the series, Kara must decide if she wants to change history to become friends with Lena again. show less
In the epic series finale, Supergirl is joined by familiar faces from the past to help her stop Lex and Nyxly for good. ...read more In the epic series finale, Supergirl is joined by familiar faces from the past to help her stop Lex and Nyxly for good. Meanwhile, Alex and Kelly prepare to walk down the aisle. show less
Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached. Mon-El ...read more Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached. Mon-El recruits one of the Legion members, Brainiac-5 (guest star Jesse Rath), to try to bring her back. Meanwhile, Reign continues her rampage on the city so the DEO teams up with the Legion of Superheroes to try to stop her. show less
Supergirl finds an opportunity to escape from the Phantom Zone but it comes with some dangerous strings attached. Meanwhile, ...read more Supergirl finds an opportunity to escape from the Phantom Zone but it comes with some dangerous strings attached. Meanwhile, Lena joins the Super Friends on a mission but finds she disagrees with their plan of action against the Phantoms and wonders if she is truly ready to be a part of the team. show less
Lena is arrested when Metallo breaks Lillian out of prison and evidence suggests that Lena is responsible.
Lena is uncertain about using her magical abilities to help Supergirl retrieve the second totem from Nyxly. William struggles to ...read more Lena is uncertain about using her magical abilities to help Supergirl retrieve the second totem from Nyxly. William struggles to write a story on the Super Friends that makes both the heroes and Andrea happy. Meanwhile, Kelly is thrilled Esme has found a new home, but things go awry and the little girl's future is put in danger. show less
Supergirl learns the true depth of Serena’s nefarious plans for Earth. Supergirl, Mon-El and Alura must devise a plan to stop ...read more Supergirl learns the true depth of Serena’s nefarious plans for Earth. Supergirl, Mon-El and Alura must devise a plan to stop her before Serena gets to Earth. J’onn prepares to say goodbye to his father. show less
With his P.I. shingle newly hung outside his office, J'onn welcomes new clients. Trying to take her mind off what happened ...read more With his P.I. shingle newly hung outside his office, J'onn welcomes new clients. Trying to take her mind off what happened at the DEO, Kara decides to team up with J'onn on his latest assignment, which unfortunately ends up tying directly into Alex's current investigation that involves the villain Menagerie. Meanwhile, Lena shares some news with James, but his reaction isn't what she expected. Nia invites Brainy to her Valentine's Day party. show less
When Winn and the team discover an alien ship has crash landed deep underwater beneath National City, Kara/Supergirl is called ...read more When Winn and the team discover an alien ship has crash landed deep underwater beneath National City, Kara/Supergirl is called in to investigate. Meanwhile, Hank attempts to bond with his father, Myr’nn. Samantha, eager for some understanding of the changes she has been experiencing, looks to her estranged mother, Patricia Arias, for answers. show less
A magical imp called Mr. Mxyzptlk arrives on Earth and wreaks havoc on National City when Kara doesn't reciprocate his ...read more A magical imp called Mr. Mxyzptlk arrives on Earth and wreaks havoc on National City when Kara doesn't reciprocate his feelings. show less
Supergirl and team must stop Nyxly from vanquishing a familiar face from Supergirl's past - Mr. Mxyzptlk. Mxy returns and ...read more Supergirl and team must stop Nyxly from vanquishing a familiar face from Supergirl's past - Mr. Mxyzptlk. Mxy returns and explains Nyxly's dark history to the super team in the best way he knows how - in song form. Meanwhile, Lena visits her mother's birthplace in Ireland, eager to dig into her past but is shocked by the small town's icy reception towards her. show less
Kara lands her dream story for Catco but when the city is suddenly attacked by a nightmare monster at the same time as her ...read more Kara lands her dream story for Catco but when the city is suddenly attacked by a nightmare monster at the same time as her interview, she is forced to take a serious look at her life and decide if she can continue to live as both Kara and Supergirl. As Dreamer takes the lead on the search for the Dream Totem, which can vanquish the nightmare monster in National City, she realizes she needs to ask her sister Mauve for help. Old wounds resurface as the two sisters come face to face. show less
Kara makes a major life decision. J’onn finds out that special DEO-caliber guns have hit the streets of National City.
Secretly furloughed from prison due to failing health, Lex Luthor visits his sister, Lena, to seek her help finding a cure. ...read more Secretly furloughed from prison due to failing health, Lex Luthor visits his sister, Lena, to seek her help finding a cure. Savvy as ever, Lena is suspicious of Lex's motives but when she's faced with a life and death situation, she must decide how she truly feels about her brother. Meanwhile, Supergirl and J'onn face off against Manchester Black. James' sister Kelly comes to town. show less
Supergirl and Imra (guest star Amy Jackson) have different ideas on how to stop the third Worldkiller, Pestilence. However, when ...read more Supergirl and Imra (guest star Amy Jackson) have different ideas on how to stop the third Worldkiller, Pestilence. However, when both Alex and Winn are seriously injured by Pestilence, Supergirl and Imra team up to stop the destruction. show less
Colonel Haley makes a surprising decision regarding Supergirl. Kara writes s series of articles highlighting aliens in National ...read more Colonel Haley makes a surprising decision regarding Supergirl. Kara writes s series of articles highlighting aliens in National City in the hopes that humans will stop being so fearful of them. Unfortunately, the article puts some of the aliens in harm’s way. show less
Supergirl makes a new ally. Lena and Lex battle for control of Luthor Corp.
Flashbacks reveal young Kara experiencing kryptonite for the first time; Nia and Brainy are trapped by invading aliens; a young ...read more Flashbacks reveal young Kara experiencing kryptonite for the first time; Nia and Brainy are trapped by invading aliens; a young Cat Grant may be the reason Supergirl never gets out of the Phantom Zone. show less
Nia and Brainy attempt to save Supergirl from the Phantom Zone by time traveling back to Kara's home in 2009. While ...read more Nia and Brainy attempt to save Supergirl from the Phantom Zone by time traveling back to Kara's home in 2009. While determined to secure the item needed to help Supergirl, Brainy is worried about keeping a low profile so as not to alter the future timeline. However, when their ship crashes upon arrival, a young Kara Danvers is the first on the scene. Meanwhile, a young reporter named Cat Grant sets her sights on Midvale as she suspects there is a big story in the small town. show less
James falls in deeper with the Children of Liberty in his efforts to meet Agent Liberty. Meanwhile, Supergirl and Manchester ...read more James falls in deeper with the Children of Liberty in his efforts to meet Agent Liberty. Meanwhile, Supergirl and Manchester Black follow a lead on Agent Liberty’s location, but things take a dark turn. Lena kicks off her first set of trials. show less
Nia's roommate, Yvette, is attacked by a man targeting Dreamer because he doesn't like that Dreamer is transgender and ...read more Nia's roommate, Yvette, is attacked by a man targeting Dreamer because he doesn't like that Dreamer is transgender and wants her to quit being a superhero. Determined to protect her community from additional harm, Dreamer refuses to give into his threats and puts herself in the line of fire to stop him. Supergirl stands by Dreamer and enlists additional help from Brainy. Meanwhile, Alex, J'onn and Kelly attempt to rescue a man stuck inside a virtual reality escape room. show less
As Braniac lays close to death after trying to stop Lex , Supergirl and team soar in to save him, engaging in an epic battle ...read more As Braniac lays close to death after trying to stop Lex , Supergirl and team soar in to save him, engaging in an epic battle with Gamenmae. After beating Leviathan, Supergirl turns her attention to Lex who has used the Obsidian platform to brainwash half the world to love him and follow him at all costs, no matter what horrible things he does. Knowing how dangerous this makes her brother, Lena enlists the entire team - Alex, J'onn, Dreamer, Kelly and Braniac - to help, but Supergirl realizes that the only way to truly stop Lex is to sacrifice herself. show less
Kara comes face to face with Red Daughter and the two engage in an epic battle. Determined to find a way to extract the ...read more Kara comes face to face with Red Daughter and the two engage in an epic battle. Determined to find a way to extract the Harun-El, Lena turns to an unlikely source for help - Lillian Luthor. Meanwhile, Alex realizes she's missing parts of her memory, and Brainy, Nia and J'onn set out to track down aliens who have been abducted by Lex. show less
Supergirl grapples with whether or not to obey the President's orders regarding Rhea's latest actions. Meanwhile, Cat ...read more Supergirl grapples with whether or not to obey the President's orders regarding Rhea's latest actions. Meanwhile, Cat Grant returns to National City. show less
When Winn’s father dies, his estranged mother, Mary (guest star Laurie Metcalf), reappears trying to reconnect and to explain ...read more When Winn’s father dies, his estranged mother, Mary (guest star Laurie Metcalf), reappears trying to reconnect and to explain why she abandoned him all those years ago. Winn is too embittered from his rough childhood to forgive her but when a copycat Toyman attacks, the two must work together to stop him. Mon-El tells Kara something important about the Worldkillers, and Alex becomes suspicious of Myr’nn’s (guest star Carl Lumbly) recent behavior. show less
When Reign starts hunting Ruby, Supergirl and Alex work together to keep her safe. Supergirl and J’onn look to Sam’s mother ...read more When Reign starts hunting Ruby, Supergirl and Alex work together to keep her safe. Supergirl and J’onn look to Sam’s mother for advice on how to stop Reign and come away with some shocking news. show less
Between Ben Lockwood's new push to stir up the anti-alien movement and the Elite's desire to target Lockwood and his ...read more Between Ben Lockwood's new push to stir up the anti-alien movement and the Elite's desire to target Lockwood and his minions, Supergirl is concerned about the safety of the American people - both human and alien. When Lockwood organizes a rally, the aliens decide to peacefully protest. Brainiac and J'onn join the alien march while Supergirl and Dreamer patrol to keep everyone safe. Meanwhile, James picks up his camera again to cover the march for CatCo, and Hayley assigns Alex a job that clashes with her beliefs. When The Elite and Ben Lockwood stir up trouble at the rally, Supergirl is forced to take a stand. show less
Supergirl goes on high alert when a new villain comes to National City. Meanwhile, Winn's new girlfriend Lyra gets him in ...read more Supergirl goes on high alert when a new villain comes to National City. Meanwhile, Winn's new girlfriend Lyra gets him in trouble with the law and the Music Meister attacks. show less
Supergirl intervenes when a building in the Heights that was set aside for low income housing is suddenly at risk to be sold to ...read more Supergirl intervenes when a building in the Heights that was set aside for low income housing is suddenly at risk to be sold to a major corporation. Supergirl recruits Orlando to help her win over the city, but things go awry when Nyxly shows up. Meanwhile, Nia trains with her mother. show less
Supergirl, Alex, and Brainiac thwart an alien attack while William investigates Kara. J'onn J'onzz and Kelly use ...read more Supergirl, Alex, and Brainiac thwart an alien attack while William investigates Kara. J'onn J'onzz and Kelly use Obsidian tech to solve a problem. show less
Colonel Haley is upset after Supergirl responds to a distress call from a Navy ship that turned out to be a deadly alien attack. ...read more Colonel Haley is upset after Supergirl responds to a distress call from a Navy ship that turned out to be a deadly alien attack. Colonel Haley reclaims the site as DEO territory and demands that Supergirl step aside. After Supergirl refuses to be told what to do, Haley refocuses her energy on finding out Supergirl’s true identity and begins to interrogate all DEO agents, including.. Meanwhile, Brainiac-5 tries to persuade Nia to embrace her superpowers but she misinterprets his motives. show less
Lex tasks Supergirl with protecting Andrea from an anti-tech extremist, but his nefarious purpose goes beyond merely keeping ...read more Lex tasks Supergirl with protecting Andrea from an anti-tech extremist, but his nefarious purpose goes beyond merely keeping Andrea alive. Meanwhile, Lena moves forward with Non Nocere, with Lex's help. show less
Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, ...read more Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she’s letting Ruby down, and J’onn confesses an old secret. show less
When Tanya, a disciple of Coville’s, escapes from what’s left of his cult, she gives Kara and James a journal that could ...read more When Tanya, a disciple of Coville’s, escapes from what’s left of his cult, she gives Kara and James a journal that could hold the key to saving Sam. Someone learns Guardian’s identity and threatens to expose James if he doesn’t do what they ask. James contemplates what it means to be a black vigilante without a mask in America. show less
Supergirl and team race Nyxly for control of a magical totem that controls courage. Supergirl and Nyxly battle and each get a ...read more Supergirl and team race Nyxly for control of a magical totem that controls courage. Supergirl and Nyxly battle and each get a piece of the totem but learn the first person to pass the test of courage will gain control of the entire thing. Meanwhile, Lena is still struggling to make sense of her newfound gift. show less
In the wake of Lex Luthor's return, the show flashes back to what he's been doing for the last two years and how his ...read more In the wake of Lex Luthor's return, the show flashes back to what he's been doing for the last two years and how his secret machinations and plans have affected Supergirl and Lena. show less
In the penultimate buildup to the season finale, Supergirl and the super friends take drastic action after a loved one is ...read more In the penultimate buildup to the season finale, Supergirl and the super friends take drastic action after a loved one is kidnapped by Nyxly and Lex. An unlikely ally steps in to help the team. show less
Supergirl and the team go head to head against Rama Khan and Leviathan. Meanwhile, Lena and Lex must join forces when Project ...read more Supergirl and the team go head to head against Rama Khan and Leviathan. Meanwhile, Lena and Lex must join forces when Project Non Nocere fails, leaving the two siblings in serious danger. show less
Lex Luthor descends upon Washington, DC and summons Lena and Lillian Luthor to the White House. Supergirl realizes she has one ...read more Lex Luthor descends upon Washington, DC and summons Lena and Lillian Luthor to the White House. Supergirl realizes she has one last chance to stop Lex and turns to the power of the press to help her. show less
Supergirl finally learns the truth about Lena while tangling with Leviathan. J'onn J'onnz makes a discovery about his ...read more Supergirl finally learns the truth about Lena while tangling with Leviathan. J'onn J'onnz makes a discovery about his brother's whereabouts. show less
A thief with psychic powers attacks National City and proves to be a formidable opponent for Supergirl.